Primary battery.



c. B. SGHOBNMBHL.

PRIMARY BATTERY.

APPLIQATION Hum 00115, 1910.

Patented June 4, 1912.

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` two positive electrode plates,

' vUNITED sTA'rEs PATENT OFFICE.

CHARLES B. SCHOENIEHL, OF WATERBURY,`CONNECTICUT.

PBIMARY BATTERY.

specification of Letters Patent.

Patentd June 4, 1912.

:Application filed October 15, 1910. Serial No. 587,204.

This invention relates to primary'batteries and particularly to that class wherein the electrodes are of plate form,'and suspended from a cover by meansof a single hanger or rod. The bolts as at present used in this' classaof batteries for the attachment of'the positive electrode plates to the insulating block and tol electrically connect the said are necessarily made of a difierent metal' from that of said lates and therefore one is to a more or less eg'ree positive to the other and thereby .ca-uses local action at their junction point,

resulting in'the plates being eaten away and thus in time loose and displaced.

It is therefore, the purpose of my invention to'provide an improved form of Aconnection intermediate of such positive electrode plates and the bolt used to connect the same, wh'ereby the above objectionsVV are overcome and' the life is prolonged. w

With this and other objects in view the invention consists in the construction, combination and arrangements of parts hereinafter fully described, illustrated upon the accompanying sheet of drawings, ,and pointed out in the 'claims hereto appended, it being understood that various changes in the form, proportions, size, and minor vdetails of construction within the scope of the claims may be resorted: to without departing from the spirit or sacrificing any of the advantages of the invention.

Uponthe accompanying drawings forming a part of this speclfication similar characters of reference denote like or corresponding parts throughout the several figures and of which- Figure 1, shows a central -vertical cross sectional view of an assembled plate form of battery element attached to a jar cover, and illustrating my novel 'form of connection intermediate. of vthe positive electrode plates and attaching bolt. Fig. 2, is a de-. tached side view of the assembled ,element shown in Fig. 1, the co'ver and lminor parts being omitted. Figs. 3, 4, and 5 show de- -the cover and the top and usefulness of the battery' tailed cross sectional views of insulating block and positive plates illustrating modified forms of the invention. Fig. 6 is a plan view of the reinforcing sleeve used in the positive plate electrode as shown in Figs. 1 to 4 inclusive, and Fig. 7, is a similar plan view of the washer shown in Fig. 5.

Referring in detail tothe characters of reference marked upon the drawings 10 represents a battery jarl cover-of the usual or any preferred type and design to cover any suitable type of jar and inclose the electrodes and an active solution in which the electrodes are submerged.

11 indicates a hanger rod which is attached to the said cover by means of n'uts 12 and to which a field wire 13 is connected through the medium of a nut 14.

15 representsa porcelain sleeve through which the hanger rod 11 passes and is arranged intermediate of the under side of of the assembledele- The suspending rod may be connected in any suitable way with the metal frame 16 surrounding the edge portions of the negative electrode plate 17 and whereby ment.

.the said frame and plate are carried by the hanger rod. An insnlating block 18 is supported within the frame 17 in any suitable manner to insure a rigid attachment of th plate and block to the hanger rod.

19 represents the two positive electrode plates which are alike in construction land are arranged on the opposite sides of the negative electrode plate, at an equal di'stance therefrom and is designed lto operate through the medium of a suitable solution, in conjunction with the said negative lelectrode plates. These positive plates are usually made of zinc, and are cast in a moldof the proper size and proportion to be used in,`

connection with a particular size negative plate, as for 'instance, one formed of compressed copper oxld.

The insulating block 18 is provided with 'a crosshole 20 through which the connecting bolt 21 freely passes for the purpose of electrically connecting the two positive electrode plates and for attaohing the sameto the insulating block which as before stated is in turn supported in the metal frame. The second field wire 22 is 'also shown connected to the rod as by means of a nut 23 and is carried up through a hole in the cover and disposed for connection as in use. The positive plates are connected to the bolt byl means of the latter passing through 'a hole exposed for the engagement ofthe bolt and thereof and whereby they are clamped nut and which the action of the solution will against the side-face of the insulating block not materially aft'ect. In addition to the through the medium of a nut 24.

- The bolts in question are usually formed of copper plated iron, though solid copper is sometimes employed, but obviously makes a more expensive construction. In either instance, however, the metal of the bolt being different from that of the plate, electrolysis occurs and the plate gives way at its point of connection with the bolt. I therefore employ a reinforcing sleeve 25 which is stamped up from sheet copper of either of the forms shown in the several figures of the drawings, and then employ it as an integral part of the positive plate, which is done by casting the sleeve in the plate when formed.v In practice the sleeve is suitably placed in the mold prior to the, running of the metal so that the metal will flow around the outer cylindrical surface of the sleeve so as to largely cover the same. The sleeve l'includes a cylindrical portion 26 and a radially disposed flange 27 which is to a more or less degree inclosed by the zinc. The hole through the cylinder of the sleeve is of a size toreceive the bolt and the length of the cylinder may be varied as desired. Al

30. sleeve may be so placed as to bring its larger` or flange end portion on the outer face of the plate as shown in Figs. 1 and 2, or it may be reversely located so as to bring the smaller end upon the outside and the flanged end upon the inside against the insulating block, or again the said fianged portion may be entirely embedded within the zinc and the smaller cylindrical end disposed toward either the inner or outer face of the plate as shown in Figs. 4 and 5. The idea in all instances being to form a positive and durable connection between the sleevev and the plate which will not t allow the solution to get therebetweenl and destroy the eficiency of the battery, while on the other hand a perfectly hard and durable surface is ary, the' parts in part, or whole may be amalgamated to reduce the difference of the potential therebetween;

Having thus described .my invention. what 1. In a primary battery, 'the combination of a negatlve electrode plate, a positive electrode plate having a washer of' a different integral sleeve vextending through the positive plate, an insulating bloclebetween the two, a bolt'passing through the said sleeve, and a positive electrode plate and insulating 2. In a primary. battery, the combination of a negative electrode' plate, a positive electrode plate, an insulating block arranged between the two, a bolt for securingvthe parts together, and a sleeve within the positive 70 electrode plate and having a radially disposed flangeembedded in the pla'te'to form a reinforced connection intermediate of the bolt vand positive electrode' plate..

of a negative electrode plate, a positive electrode plate, an insulating block arranged between lthe two, a bolt and nut for securing L the parts together, a sleeve within the positive electrode plate having a radially disv- 80 posed flange seated within theout'er ,face of the said positive electrode to form at'oonnection intermediate of said positive plate, bolt and nut.

Signed at vWaterbury in the i county of 85 New Haven and State of Connecticut this 6th day of 'October A. D., 1910.

vCHARLES B. soHoEnMEHL.

VVitnesses:

THEoDoRE E. RoeERs, EDWARD B. REILEY.

' Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents,A

, Washington, D. 0. Il E above construction and -as is usually custom- I claim and desire to secure by Letters Pat'- 55..`

, metal cast in one side thereof andhaving an block for securing the said parts' together.

3. In a primary battery; the combination 

